| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [noun] [prep] a [adj] period | 33 |
|
| 2 | [verb] [noun sg] [prep] a [adj] period | 28 |
|
| 3 | [verb] [noun] over a [adj] period | 16 |
|
| 4 | [to-vb] [noun] [prep] a [adj] period | 15 |
|
| 5 | [verb] [noun] for a [adj] period | 14 |
|
| 6 | [verb] [noun] [prep] a long period | 13 |
|
| 7 | [verb] [noun pl] [prep] a [adj] period | 12 |
|
| 8 | [verb] [noun] [prep] a [adj -er] period | 9 |
|
| 9 | take [noun] [prep] a [adj] period | 8 |
|
| 10 | [verb] [noun] [prep] a longer period | 7 |
|
| 11 | [verb] place [prep] a [adj] period | 7 |
|
| 12 | [verb] place [prep] a [adj] period | 7 |
|
| 13 | [v-ing] [noun] [prep] a [adj] period | 6 |
|
| 14 | [verb] [noun] [prep] a long period | 6 |
|
| 15 | [vb base] [noun] [prep] a [adj] period | 5 |
|
| 16 | [vb infin] [noun] [prep] a [adj] period | 5 |
|
| 17 | [vb past] [noun] [prep] a [adj] period | 5 |
|
